6. Ninety-five countries worldwide now own military drones, which is a notable increase from 2010, according to a new report by the Center for the Study of the Drone. The report, which is due out for release today, found that an estimated 30,000 or more drones are currently in service globally, according to The Wall Street Journal. In many countries, their armed forces are using drone operations more in such a way that it's changing global security, it said. - WSJ